Numbers from Somewhere
This video presents the same text shown beside it, spoken and on screen. It adds nothing the text does not say.
State
Probabilistic reasoning buys graded, calibrated, always-available belief — and pays in numbers that must come from somewhere: counts, experts, or learning, each with its own failure modes.
Show
A wrong prior does not crash the calculus; it flows through it, emerging as a confident posterior with nothing visibly amiss.
Watch for
The arithmetic guards belief's form; the content stays as good as what was written down.